Water-heater.



UNUSED STATE-.s

PATENT oiri'uon.l

CHARLES A. BOREIN, OF OAKLAND, CALIFORNIA.`

wsfrnnersarna. e'

Specication of Letters Patent;

To all whom. it may concern: j

Be it known that I, CHARLES A. BOREIN, a citizen of the United States, and residing at 33 Telegraph avenue, in the city of Oakland, county of Alameda, and State of California, have invented certain new and useful Improvements in W'ater Heaters; and I do iereby declare the following to be a full, clear, and exact descri tion ofthe said invention, such as will enab e others skilled in the art to which itmost nearly appertains to make, use, and practice the same.

This invention relates to an improvement in gas burning water heaters, and particularly to a means for utilizing the waste heat from open burners on cook stoves.

The volume and velocity of a gas flame is such that it is not entirely absorbed by the contents of the cooking utensil subjected thereto. A considerable portion of it esca es from beneath the utensil and is lost by rat iation. It is the practice to intorpose a cast iron grid above the name to support the utensil. This grid absorbs considerable heat which it radiates Without economic results.

It is the object of this inventionl to' conserve this wasted heat.

In the accomplishment of this object the invention consists broadly of a hollow grid interposed between the flame and the utensil and connected with a storage tank by suitable pi es in such a manner that water is circulate through the hollow grid absorbing that quantity of the total volume of the gas {lanie which would otherwise go to waste, and storing it within the storage tank. After thc temperature of the water has been raised, within the rid the eiiiciency of the burner is increased y the regenerative action of the flame with the grid, that is to say, the volume of the heat stored Within the `grid prevents sudden chilling of the gas flame due to atmospheric disturbances, which are always resent under the conditions applying to this invention. The velocity of agas flame is so great that the ordinary flat surface of a cookingutensil will not absorb the whole volume of heat thrown ott by a burner working at normal capacity. Culinary conditions are such that ailame cannot be concentrated upon one spot and if it Ais turned down suiciently to ituse the heat a suiicient aspiration is not-present to give proper combustion nor to overcomefthe cold space between the tcp of the burner and the bottom of the utensil.

Practical demonstration has roven that the eflicieney of the burner un er ordinary conditions is not reduced appre'ciably by the attachment of this invention. Whereas a. great economy is accomplishedin the production of hot water which is a large item under conditions Where this invention would be applicable.

In the drawing: Figure 1 is an isometrlcal perspective of a gas range having thisA inven-- tion applied thereto. Fir. 2 is an isometrical plan View from above oi) one of the hollow grids forming a part of this invention. F110. 3 1s a vertical cross section of the same wit a. diagrammatic representation of a gas burner thereunder.

In detail the construction consists of the hollow rid preferably circular in form withtheiollow ring n2 cross connected diametrically b the hollow spokes i3 radiating from the ho low center #4. The rim being provided with the lugs it, il for the pipe connections. The inlet pipe it? communicates with the bottom of the storage tank 8. The outletpipe #t9 communicates with the top of the said storage tank. This .tank may be connected to the city water main under full pressure or it may be used as a gravity tank as circumstances require.A "The inlet to the tank #8 being connected with the source of supply, at itl 1. One or all of the burners of a stove may be provided with these hollow grids which are preferably connected in series as shown. By this connection the water is progressively heated as it passes through each operative. grid, seratim. These.grids may be constructed in any form or outline that occasion demands. The form shown cast as one integral piece with the chambers ill() cored therein being the preferred form.

The upper surface is provided with the l within a compartment of the stove, such as $13, a double Aadvantage results, the com# pertinent acts .as an excellent warming closet and the storage tank is thereby insuvv'.Eaten'tecl. ug. 4, 1908.

Appuuun mcd April i, 1901. `anni no. 365,852.

It is obvious that thi s invention is equally applicable to any gas, hydro-carbon or sinn- 5 larlame without departing from 'the spirit o the invention.

Having thus described this invention, what is claimed and desired topsecure by Letters Patent is- Tbe combination with s gas stove provided with a Warming oven or Qomnartment, of a tank located 1n said oven, a plurality of 21rcular grids each di vided into a plurality of annular cliambers and a plurality of radial chambers connecting said annular chambers 15 and in communication therewith, means for heating said grids, pipes connecting said grids in series, means for supplying Water to said grids, and a pi e leadlng from one of said grids to said tanl.

In testimony whereof, I have hereunto set my hand this 11th day of March 1907.

` CHARLES A. BOREIN. 

